This is a brief video on the neuromusculature of lower extremity, specifically the lumbar plexus and derivative nerves, muscles, and lesions of the lower extremity.
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ADDITIONAL TAGS:
Scrotum/labia majora
Through inguinal canal
Ilioinguinal n. (L1)
(sensation)
Lateral femoral cutaneous n. (L2, L3)→ beneath inguinal ligament
Sensation to anterolateral thigh
Genitofemoral n. (L1, L2)
Genital branch
Femoral branch → under inguinal l.
Sensation to area on proximal/ anterior thigh
Femoral n. (L2-L4) with psoas and iliacus branches
Beneath inguinal ligament, thru femoral triangle
Anterior thigh muscles:
Hip flexors: pectineus, sartorius, psoas major + iliacus = iliopsoas (deep to inguinal lig., to lesser trochanter of hip) (also laterally rotate hip)
Knee extensors: quadriceps (rectus femoris, vastus medialis (branch thru adductor canal), vastus lateralis, vastus intermedius) → continue as patellar tendon into tibial tuberosity
Obturator n. (L2-L4)
Through obturator canal
Medial thigh muscles:
Hip adductors: adductor longus, adductor brevis, gracilis, adductor magnus (except hamstring portion)
Lat hip rotator: obturator externus
Sacral nerves
Lumbosacral trunk (L4-5)
Hip fracture (femur neck fracture) → leg is shortened and laterally rotated bc of iliopsoas muscle
Femoral a and v pass through adductor magnus → adductor hiatus
Pectineus - flexes and adducts the hip
Sartorius - long, thin hip abduct, ext rot, flex
Gracilis - long, thin hip adductor, used for muscle grafts
Insert into pes anserinus: “goose footâ€
Anterior branch → sensory to medial thigh region
Meralgia - entrapment causes burning pain and/or paresthesia to outer thigh
Terminates as saphenous (longest sensory nerve)
Saphenous and vastus medialis branch go thru adductor canal
Lumbar plexus and derivative nerves, muscles, and lesions of the lower extremity camera iphone 8 plus apk | |
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| Education | Upload TimePublished on 6 Nov 2016 |
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